Three different methods were proposed based on a k - vertex disjoint graph technique which was applied to the reassembly of image fragments : similar coefficient matching ( scm ) , volatility gradient matching ( vgm ) and prediction pixel matching ( ppm ) , to evaluate the candidate weights between any fragments 針對(duì)目前最優(yōu)重組算法中的關(guān)鍵技術(shù)- -鄰近權(quán)重選派技術(shù),提出三種計(jì)算方法:相似系數(shù)匹配( scm ) 、波動(dòng)梯度匹配( vgm )和預(yù)測(cè)像素匹配( ppm ) 。
In order to promote the application and popularization of hydraulic simulation technique and to bring into play the advantage of bond graph technique in modeling , this dissertation carries out the researches on the visual dynamic modeling of hydraulic systems and its key techniques . the aim of the research is to relax the contradiction between the requirement of dynamic simulation and the faultiness of support software . moreover , a general purposed simulation software of hydraulic system based on bond graph technique which is more useful , easy to use and popularize would be developed 為了改變這種不利狀況,推動(dòng)液壓仿真技術(shù)的推廣與使用,充分發(fā)揮出鍵合圖技術(shù)在建模方面所具有的優(yōu)勢(shì),本論文開(kāi)展了液壓系統(tǒng)可視化動(dòng)態(tài)建模及其關(guān)鍵性技術(shù)的研究工作,旨在進(jìn)一步改善動(dòng)態(tài)仿真需求與軟件支撐不完善性之間的矛盾,研制開(kāi)發(fā)出具有較強(qiáng)的實(shí)用價(jià)值、更易于用戶使用與推廣的基于鍵合圖建模技術(shù)的液壓系統(tǒng)動(dòng)態(tài)仿真通用軟件。
Based on graph and object - oriented technique , the dissertation establishes a visual modeling environment . it remedies the shortcomings of hydraulic simulation software based on power bond graph in the foreside model input and treatment by introducing the modeling style of hydraulic principle figure and graphical power bond graph . the dissertation puts forward a visual modeling method based on power bond graph technique for hydraulic principle figure oriented completely 針對(duì)基于鍵合圖建模技術(shù)的液壓仿真軟件所普遍存在的對(duì)用戶起點(diǎn)要求過(guò)高的問(wèn)題,本文提出并建立了一個(gè)基于圖形和面向?qū)ο蠹夹g(shù)的可視化建模環(huán)境,通過(guò)采用液壓原理圖建模和功率鍵合圖圖形建模的方式,有效地解決了此類仿真軟件在前端模型輸入與處理方面存在的問(wèn)題。